Bale "felt some discomfort in his left leg" after training on Thursday, and tests on Friday revealed "a strain to the middle third of the adductor longus muscle in his left leg", the defending European club champion said. It will be interesting to see what happens next summer if he gets himself fit, has a good run of games this season and gets his form up.
Bale has played a significant part in that success, but the last year has been particularly damaging.
The Wales forward had returned to training the previous week and there were whispers that he may even sneak onto the bench for the visit of the Canary Islanders.
"I don't know the full extent of it. He'll be devastated", he told UK newspapers. One Manchester United player Mourinho is considerably more keen to keep hold of is Ander Herrera and the Portuguese has ordered the United hierarchy to trigger a 12-month extension in the midfielder's contract to prevent him leaving on a free transfer at the end of the season.
"To compound it for Bale, the player who has taken his place in the past year is Isco, who has arguably been Real Madrid's best player over that year".
"If he's happy in Madrid fine". Bale did not last until half-time, limping off to be replaced by Marco Asensio. That's up to him and Real Madrid.
The reigning La Liga and UEFA Champions League winners are believed to be open to offers for the Welshman, and there are rumours that Jose Mourinho's Red Devils will be the first to jump at the opportunity.
Real Madrid missed out on the likes of Kylian Mbappe in the summer, leaving lingering concerns of the lack of freshness in the team, despite last season's success.
Don Balón are the ones claiming that the English club are willing to spend an incredible €200m on the dazzling Spaniard.
Oh, and he also happens to be Real Madrid's top scorer in the league.